Indian Journal of Entomology
Open Access
SCOPUSWeb of Science
  • Year: 2022
  • Volume: 84
  • Issue: 3

Toxicity of Some Insecticides Against Thrips Infesting Tomato

  • Author:
  • Timmanna*, Mohan I Naik, B Jamuna1, N G Ravichandra2
  • Total Page Count: 2
  • Published Online: Feb 8, 2023
  • Page Number: 702 to 703

1Pesticide Residue Laboratory, University of Agricultural Sciences, Raichur584102, Karnataka, India

2Department of Plant Pathology, University of Agricultural Sciences, Bengaluru560065, Karnataka, India

Department of Entomology, University of Agricultural Sciences, Bengaluru560065, Karnataka, India

*Email: thimsento@gmail.com (corresponding author)

Online Published on 08 February, 2023.

Abstract

Bean dip bioassay was performed with six insecticides on the mortality response in tomato thrips-Thrips palmi Karny and Scirtothrips dorsalis Hood. The LC50 values ranged from 1.591 to 17.018 ppm, and spinosad with the least LC50 value of 1.591 ppm at 95% confidence limit was the most toxic. It was followed by cyantraniliprole (2.425 ppm), diafenthiuron (2.396 ppm), imidacloprid (5.110 ppm), fipronil (13.560 ppm) and dimethoate (17.018 ppm). Thus, spinosad, diafenthiuron and cyantraniliprole were observed to be more toxic.

Keywords

Tomato, Thrips, Tospoviruses, Vectors, Thrips palmi, Scirtothrips dorsalis, Insecticides, Bioassay, LC50, Spinosad, Cyantraniliprole, Diafenthiuron, Imidacloprid, Fipronil, Dimethoate